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US5086146A
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Methylalkoxy-methylalkyl cyclosiloxane copolymer
Assignee: Dow Silicones Corp
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Filing: 1991-04-08
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Granted: 1992-02-04
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Expires: 2011-04-08
Abstract
Abstract A methylalkoxy-methylalkyl cyclosiloxane copolymer having the formula (OSiROR).sub.d (OSiRR').sub.e where R is an alkyl radical having one to three carbon atoms; R' is the alkyl radical (CH 2 ) c R; c is an integer having a value of from 1 to 17; d is an integer having a value of from 3 to 10; and e is an integer having a value of from one to seven.
Inventors
- 👤 Donald T. Liles
- 👤 Renee A. Klein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:02
CPC Classifications
C; C04; C04B; C04B41/00; C04B41/60; C04B41/61; C04B41/62; C04B41/64; C04B41/45; C04B41/46; C04B41/49; C04B41/4905; C04B41/495; C04B41/4977; C09; C09D; C09D183/00; C09D183/04; C09K; C09K3/00; C09K3/18
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
68 words
A methylalkoxy-methylalkyl cyclosiloxane copolymer having the formula (OSiROR).sub.d (OSiRR').sub.e where R is an alkyl radical having one to three carbon atoms; R' is the alkyl radical (CH 2 ) c R; c is an integer having a value of from one to seventeen; d is an integer having a value of from 3 to 10; and e is an integer having a value of from one to seven.
Claim 2
Dependent Claim
68 words
A methylalkoxy-methylalkyl cyclosiloxane copolymer having the formula (OSiROR).sub.d (OSiRR').sub.e where R is an alkyl radical having one to three carbon atoms; R' is the alkyl radical (CH 2 ) c R; c is an integer having a value of from one to seventeen; d is an integer having a value of from 3 to 10; and e is an integer having a value of from one to seven.
Claim 3
Dependent Claim
18 words
The copolymer of claim 1 in which the integer c has a value of five, six, or seven.
Claim 4
Dependent Claim
17 words
The copolymer of claim 1 in which the integer d has a value of three or four.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-02-03 | 1995-08-05 | 1996-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-02-03 | 1999-08-05 | 2000-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-02-03 | 2003-08-05 | 2004-02-04 | $7700.00 | Window Closed / Lapsed |